code: def predict_fn(input_data, predict_callable):
      """Placeholder docstring"""
      return predict_callable(input_data)
  
file_path: sagemaker-python-sdk/src/sagemaker/serve/model_server/torchserve/xgboost_inference.py
imports: from __future__ import absolute_import
  import os
  import io
  import subprocess
  import cloudpickle
  import shutil
  import platform
  from pathlib import Path
  from functools import partial
  import logging
label_desc: Use image node_id 3 for calling a global function with example usage: predict_fn(input_data, predict_callable) and returns: predict_callable